src/msw/ole/oleutils.cpp

///////////////////////////////////////////////////////////////////////////////
// Name:        src/msw/ole/oleutils.cpp
// Purpose:     implementation of OLE helper functions
// Author:      Vadim Zeitlin
// Modified by:
// Created:     19.02.98
// RCS-ID:      $Id$
// Copyright:   (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
// Licence:     wxWindows licence
///////////////////////////////////////////////////////////////////////////////

// ============================================================================
// Declarations
// ============================================================================

// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------

// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"

#if defined(__BORLANDC__)
    #pragma hdrstop
#endif

#if wxUSE_OLE

#ifndef WX_PRECOMP
    #include "wx/log.h"
#endif

#ifndef __CYGWIN10__

#include "wx/msw/private.h"

#ifdef __WXWINCE__
    #include <winreg.h>
    #include <ole2.h>

    #define GUID_DEFINED
    #define UUID_DEFINED
#endif

// OLE
#ifndef __WXWINCE__
#include  "wx/msw/ole/uuid.h"
#endif

#include  "wx/msw/ole/oleutils.h"

#if defined(__VISUALC__) && (__VISUALC__ > 1000)
    #include  <docobj.h>
#endif

// ============================================================================
// Implementation
// ============================================================================

// return true if the iid is in the array
WXDLLEXPORT bool IsIidFromList(REFIID riid, const IID *aIids[], size_t nCount)
{
  for ( size_t i = 0; i < nCount; i++ ) {
    if ( riid == *aIids[i] )
      return true;
  }

  return false;
}

WXDLLEXPORT BSTR wxConvertStringToOle(const wxString& str)
{
    return wxBasicString(str).Get();
}

WXDLLEXPORT wxString wxConvertStringFromOle(BSTR bStr)
{
    // NULL BSTR is equivalent to an empty string (this is the convention used
    // by VB and hence we must follow it)
    if ( !bStr )
        return wxString();

    const int len = SysStringLen(bStr);

#if wxUSE_UNICODE
    wxString str(bStr, len);
#else
    wxString str;
    if (len)
    {
        wxStringBufferLength buf(str, len); // asserts if len == 0
        buf.SetLength(WideCharToMultiByte(CP_ACP, 0 /* no flags */,
                                  bStr, len /* not necessarily NUL-terminated */,
                                  buf, len,
                                  NULL, NULL /* no default char */));
    }
#endif

    return str;
}

// ----------------------------------------------------------------------------
// wxBasicString
// ----------------------------------------------------------------------------

wxBasicString::wxBasicString(const wxString& str)
{
    m_bstrBuf = SysAllocString(str.wc_str(*wxConvCurrent));
}

wxBasicString::wxBasicString(const wxBasicString& src)
{
    m_bstrBuf = src.Get();
}

wxBasicString& wxBasicString::operator=(const wxBasicString& src)
{
    SysReAllocString(&m_bstrBuf, src);
    return *this;
}

wxBasicString::~wxBasicString()
{
    SysFreeString(m_bstrBuf);
}


// ----------------------------------------------------------------------------
// Convert variants
// ----------------------------------------------------------------------------

#if wxUSE_VARIANT

WXDLLEXPORT bool wxConvertVariantToOle(const wxVariant& variant, VARIANTARG& oleVariant)
{
    VariantInit(&oleVariant);
    if (variant.IsNull())
    {
        oleVariant.vt = VT_NULL;
        return true;
    }

    wxString type(variant.GetType());


    if (type == wxT("long"))
    {
        oleVariant.vt = VT_I4;
        oleVariant.lVal = variant.GetLong() ;
    }
    // Original VC6 came with SDK too old to contain VARIANT::llVal declaration
    // and there doesn't seem to be any way to test for it as Microsoft simply
    // added it to the later version of oaidl.h without changing anything else.
    // So assume it's not present for VC6, even though it might be if an
    // updated SDK is used. In this case the user would need to disable this
    // check himself.
#if wxUSE_LONGLONG && !defined(__VISUALC6__)
    else if (type == wxT("longlong"))
    {
        oleVariant.vt = VT_I8;
        oleVariant.llVal = variant.GetLongLong().GetValue();
    }
#endif
    else if (type == wxT("char"))
    {
        oleVariant.vt=VT_I1;            // Signed Char
        oleVariant.cVal=variant.GetChar();
    }
    else if (type == wxT("double"))
    {
        oleVariant.vt = VT_R8;
        oleVariant.dblVal = variant.GetDouble();
    }
    else if (type == wxT("bool"))
    {
        oleVariant.vt = VT_BOOL;
        oleVariant.boolVal = variant.GetBool() ? VARIANT_TRUE : VARIANT_FALSE;
    }
    else if (type == wxT("string"))
    {
        wxString str( variant.GetString() );
        oleVariant.vt = VT_BSTR;
        oleVariant.bstrVal = wxConvertStringToOle(str);
    }
#if wxUSE_DATETIME
    else if (type == wxT("datetime"))
    {
        wxDateTime date( variant.GetDateTime() );
        oleVariant.vt = VT_DATE;

        SYSTEMTIME st;
        date.GetAsMSWSysTime(&st);

        SystemTimeToVariantTime(&st, &oleVariant.date);
    }
#endif
    else if (type == wxT("void*"))
    {
        oleVariant.vt = VT_DISPATCH;
        oleVariant.pdispVal = (IDispatch*) variant.GetVoidPtr();
    }
    else if (type == wxT("list") || type == wxT("stringlist"))
    {
        oleVariant.vt = VT_VARIANT | VT_ARRAY;

        SAFEARRAY *psa;
        SAFEARRAYBOUND saBound;
        VARIANTARG *pvargBase;
        VARIANTARG *pvarg;
        int i, j;

        int iCount = variant.GetCount();

        saBound.lLbound = 0;
        saBound.cElements = iCount;

        psa = SafeArrayCreate(VT_VARIANT, 1, &saBound);
        if (psa == NULL)
            return false;

        SafeArrayAccessData(psa, (void**)&pvargBase);

        pvarg = pvargBase;
        for (i = 0; i < iCount; i++)
        {
            // copy each string in the list of strings
            wxVariant eachVariant(variant[i]);
            if (!wxConvertVariantToOle(eachVariant, * pvarg))
            {
                // memory failure:  back out and free strings alloc'ed up to
                // now, and then the array itself.
                pvarg = pvargBase;
                for (j = 0; j < i; j++)
                {
                    SysFreeString(pvarg->bstrVal);
                    pvarg++;
                }
                SafeArrayDestroy(psa);
                return false;
            }
            pvarg++;
        }

        SafeArrayUnaccessData(psa);

        oleVariant.parray = psa;
    }
    else
    {
        oleVariant.vt = VT_NULL;
        return false;
    }
    return true;
}

#ifndef VT_TYPEMASK
#define VT_TYPEMASK 0xfff
#endif

WXDLLEXPORT bool
wxConvertOleToVariant(const VARIANTARG& oleVariant, wxVariant& variant)
{
    bool ok = true;
    if ( oleVariant.vt & VT_ARRAY )
    {

        // Compute the total number of elements in all array dimensions
        int cElements = 1;
        for ( int cDims = 0; cDims < oleVariant.parray->cDims; cDims++ )
            cElements *= oleVariant.parray->rgsabound[cDims].cElements;

        // Get a pointer to the data
        void* pvdata;
        HRESULT hr = SafeArrayAccessData(oleVariant.parray, &pvdata);
        if ( FAILED(hr) )
            return false;

        switch (oleVariant.vt & VT_TYPEMASK)
        {
            case VT_VARIANT:
                {
                    variant.ClearList();
                    VARIANTARG *variant_data=(VARIANTARG*)pvdata;
                    for ( int i = 0; i < cElements; i++ )
                    {
                        VARIANTARG& oleElement = variant_data[i];
                        wxVariant vElement;
                        if ( !wxConvertOleToVariant(oleElement, vElement) )
                        {
                            ok = false;
                            variant.ClearList();
                            break;
                        }

                        variant.Append(vElement);
                    }
                }
                break;

            case VT_BSTR:
                {
                    wxArrayString strings;
                    BSTR *string_val=(BSTR*)pvdata;
                    for ( int i = 0; i < cElements; ++i )
                    {
                        wxString str=wxConvertStringFromOle(*string_val);
                        strings.Add(str);
                        ++string_val;
                    }
                    variant=strings;
                }
                break;

            default:
                wxLogDebug(wxT("unhandled VT_ARRAY type %x in wxConvertOleToVariant"),
                           oleVariant.vt & VT_TYPEMASK);
                variant = wxVariant();
                ok = false;
                break;
        }

        SafeArrayUnaccessData(oleVariant.parray);
    }
    else if ( oleVariant.vt & VT_BYREF )
    {
        switch ( oleVariant.vt & VT_TYPEMASK )
        {
            case VT_VARIANT:
                {
                    VARIANTARG& oleReference = *((LPVARIANT)oleVariant.byref);
                    if (!wxConvertOleToVariant(oleReference,variant))
                        return false;
                    break;
                }

            default:
                wxLogError(wxT("wxAutomationObject::ConvertOleToVariant: [as yet] unhandled reference %X"),
                            oleVariant.vt);
                return false;
        }
    }
    else // simply type (not array or reference)
    {
        switch ( oleVariant.vt & VT_TYPEMASK )
        {
            case VT_BSTR:
                {
                    wxString str(wxConvertStringFromOle(oleVariant.bstrVal));
                    variant = str;
                }
                break;

            case VT_DATE:
#if wxUSE_DATETIME
                {
                    SYSTEMTIME st;
                    VariantTimeToSystemTime(oleVariant.date, &st);

                    wxDateTime date;
                    date.SetFromMSWSysTime(st);
                    variant = date;
                }
#endif // wxUSE_DATETIME
                break;

                // See the comment before the __VISUALC6__ test above.
#if wxUSE_LONGLONG && !defined(__VISUALC6__)
            case VT_I8:
                variant = wxLongLong(oleVariant.llVal);
                break;
#endif // wxUSE_LONGLONG

            case VT_I4:
                variant = (long) oleVariant.lVal;
                break;

            case VT_I2:
                variant = (long) oleVariant.iVal;
                break;

            case VT_BOOL:
                variant = oleVariant.boolVal != 0;
                break;

            case VT_R4:
                variant = oleVariant.fltVal;
                break;

            case VT_R8:
                variant = oleVariant.dblVal;
                break;

            case VT_DISPATCH:
                variant = (void*) oleVariant.pdispVal;
                break;

            case VT_NULL:
                variant.MakeNull();
                break;

            case VT_EMPTY:
                break;    // Ignore Empty Variant, used only during destruction of objects

            default:
                wxLogError(wxT("wxAutomationObject::ConvertOleToVariant: Unknown variant value type %X -> %X"),
                           oleVariant.vt,oleVariant.vt&VT_TYPEMASK);
                return false;
        }
    }

    return ok;
}

#endif // wxUSE_VARIANT


// ----------------------------------------------------------------------------
// Debug support
// ----------------------------------------------------------------------------

#if wxUSE_DATAOBJ

#if wxDEBUG_LEVEL && (( defined(__VISUALC__) && (__VISUALC__ > 1000) ))
static wxString GetIidName(REFIID riid)
{
  // an association between symbolic name and numeric value of an IID
  struct KNOWN_IID {
    const IID  *pIid;
    const wxChar *szName;
  };

  // construct the table containing all known interfaces
  #define ADD_KNOWN_IID(name) { &IID_I##name, wxT(#name) }

  static const KNOWN_IID aKnownIids[] = {
    ADD_KNOWN_IID(AdviseSink),
    ADD_KNOWN_IID(AdviseSink2),
    ADD_KNOWN_IID(BindCtx),
    ADD_KNOWN_IID(ClassFactory),
#if ( !defined( __VISUALC__) || (__VISUALC__!=1010) )
    ADD_KNOWN_IID(ContinueCallback),
    ADD_KNOWN_IID(EnumOleDocumentViews),
    ADD_KNOWN_IID(OleCommandTarget),
    ADD_KNOWN_IID(OleDocument),
    ADD_KNOWN_IID(OleDocumentSite),
    ADD_KNOWN_IID(OleDocumentView),
    ADD_KNOWN_IID(Print),
#endif
    ADD_KNOWN_IID(DataAdviseHolder),
    ADD_KNOWN_IID(DataObject),
    ADD_KNOWN_IID(Debug),
    ADD_KNOWN_IID(DebugStream),
    ADD_KNOWN_IID(DfReserved1),
    ADD_KNOWN_IID(DfReserved2),
    ADD_KNOWN_IID(DfReserved3),
    ADD_KNOWN_IID(Dispatch),
    ADD_KNOWN_IID(DropSource),
    ADD_KNOWN_IID(DropTarget),
    ADD_KNOWN_IID(EnumCallback),
    ADD_KNOWN_IID(EnumFORMATETC),
    ADD_KNOWN_IID(EnumGeneric),
    ADD_KNOWN_IID(EnumHolder),
    ADD_KNOWN_IID(EnumMoniker),
    ADD_KNOWN_IID(EnumOLEVERB),
    ADD_KNOWN_IID(EnumSTATDATA),
    ADD_KNOWN_IID(EnumSTATSTG),
    ADD_KNOWN_IID(EnumString),
    ADD_KNOWN_IID(EnumUnknown),
    ADD_KNOWN_IID(EnumVARIANT),
    ADD_KNOWN_IID(ExternalConnection),
    ADD_KNOWN_IID(InternalMoniker),
    ADD_KNOWN_IID(LockBytes),
    ADD_KNOWN_IID(Malloc),
    ADD_KNOWN_IID(Marshal),
    ADD_KNOWN_IID(MessageFilter),
    ADD_KNOWN_IID(Moniker),
    ADD_KNOWN_IID(OleAdviseHolder),
    ADD_KNOWN_IID(OleCache),
    ADD_KNOWN_IID(OleCache2),
    ADD_KNOWN_IID(OleCacheControl),
    ADD_KNOWN_IID(OleClientSite),
    ADD_KNOWN_IID(OleContainer),
    ADD_KNOWN_IID(OleInPlaceActiveObject),
    ADD_KNOWN_IID(OleInPlaceFrame),
    ADD_KNOWN_IID(OleInPlaceObject),
    ADD_KNOWN_IID(OleInPlaceSite),
    ADD_KNOWN_IID(OleInPlaceUIWindow),
    ADD_KNOWN_IID(OleItemContainer),
    ADD_KNOWN_IID(OleLink),
    ADD_KNOWN_IID(OleManager),
    ADD_KNOWN_IID(OleObject),
    ADD_KNOWN_IID(OlePresObj),
    ADD_KNOWN_IID(OleWindow),
    ADD_KNOWN_IID(PSFactory),
    ADD_KNOWN_IID(ParseDisplayName),
    ADD_KNOWN_IID(Persist),
    ADD_KNOWN_IID(PersistFile),
    ADD_KNOWN_IID(PersistStorage),
    ADD_KNOWN_IID(PersistStream),
    ADD_KNOWN_IID(ProxyManager),
    ADD_KNOWN_IID(RootStorage),
    ADD_KNOWN_IID(RpcChannel),
    ADD_KNOWN_IID(RpcProxy),
    ADD_KNOWN_IID(RpcStub),
    ADD_KNOWN_IID(RunnableObject),
    ADD_KNOWN_IID(RunningObjectTable),
    ADD_KNOWN_IID(StdMarshalInfo),
    ADD_KNOWN_IID(Storage),
    ADD_KNOWN_IID(Stream),
    ADD_KNOWN_IID(StubManager),
    ADD_KNOWN_IID(Unknown),
    ADD_KNOWN_IID(ViewObject),
    ADD_KNOWN_IID(ViewObject2),
  };

  // don't clobber preprocessor name space
  #undef ADD_KNOWN_IID

  // try to find the interface in the table
  for ( size_t ui = 0; ui < WXSIZEOF(aKnownIids); ui++ ) {
    if ( riid == *aKnownIids[ui].pIid ) {
      return aKnownIids[ui].szName;
    }
  }

#ifndef __WXWINCE__
  // unknown IID, just transform to string
  Uuid uuid(riid);
  return wxString((const wxChar *)uuid);
#else
  return wxEmptyString;
#endif
}

WXDLLEXPORT void wxLogQueryInterface(const wxChar *szInterface, REFIID riid)
{
  wxLogTrace(wxTRACE_OleCalls, wxT("%s::QueryInterface (iid = %s)"),
             szInterface, GetIidName(riid).c_str());
}

WXDLLEXPORT void wxLogAddRef(const wxChar *szInterface, ULONG cRef)
{
  wxLogTrace(wxTRACE_OleCalls, wxT("After %s::AddRef: m_cRef = %d"), szInterface, cRef + 1);
}

WXDLLEXPORT void wxLogRelease(const wxChar *szInterface, ULONG cRef)
{
  wxLogTrace(wxTRACE_OleCalls, wxT("After %s::Release: m_cRef = %d"), szInterface, cRef - 1);
}

#endif  // wxDEBUG_LEVEL

#endif // wxUSE_DATAOBJ

#endif // __CYGWIN10__

#endif // wxUSE_OLE
Commit	Line	Data
	1	///////////////////////////////////////////////////////////////////////////////
	2	// Name: src/msw/ole/oleutils.cpp
	3	// Purpose: implementation of OLE helper functions
	4	// Author: Vadim Zeitlin
	5	// Modified by:
	6	// Created: 19.02.98
	7	// RCS-ID: $Id$
	8	// Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
	9	// Licence: wxWindows licence
	10	///////////////////////////////////////////////////////////////////////////////
	11
	12	// ============================================================================
	13	// Declarations
	14	// ============================================================================
	15
	16	// ----------------------------------------------------------------------------
	17	// headers
	18	// ----------------------------------------------------------------------------
	19
	20	// For compilers that support precompilation, includes "wx.h".
	21	#include "wx/wxprec.h"
	22
	23	#if defined(__BORLANDC__)
	24	#pragma hdrstop
	25	#endif
	26
	27	#if wxUSE_OLE
	28
	29	#ifndef WX_PRECOMP
	30	#include "wx/log.h"
	31	#endif
	32
	33	#ifndef __CYGWIN10__
	34
	35	#include "wx/msw/private.h"
	36
	37	#ifdef __WXWINCE__
	38	#include <winreg.h>
	39	#include <ole2.h>
	40
	41	#define GUID_DEFINED
	42	#define UUID_DEFINED
	43	#endif
	44
	45	// OLE
	46	#ifndef __WXWINCE__
	47	#include "wx/msw/ole/uuid.h"
	48	#endif
	49
	50	#include "wx/msw/ole/oleutils.h"
	51
	52	#if defined(__VISUALC__) && (__VISUALC__ > 1000)
	53	#include <docobj.h>
	54	#endif
	55
	56	// ============================================================================
	57	// Implementation
	58	// ============================================================================
	59
	60	// return true if the iid is in the array
	61	WXDLLEXPORT bool IsIidFromList(REFIID riid, const IID *aIids[], size_t nCount)
	62	{
	63	for ( size_t i = 0; i < nCount; i++ ) {
	64	if ( riid == *aIids[i] )
	65	return true;
	66	}
	67
	68	return false;
	69	}
	70
	71	WXDLLEXPORT BSTR wxConvertStringToOle(const wxString& str)
	72	{
	73	return wxBasicString(str).Get();
	74	}
	75
	76	WXDLLEXPORT wxString wxConvertStringFromOle(BSTR bStr)
	77	{
	78	// NULL BSTR is equivalent to an empty string (this is the convention used
	79	// by VB and hence we must follow it)
	80	if ( !bStr )
	81	return wxString();
	82
	83	const int len = SysStringLen(bStr);
	84
	85	#if wxUSE_UNICODE
	86	wxString str(bStr, len);
	87	#else
	88	wxString str;
	89	if (len)
	90	{
	91	wxStringBufferLength buf(str, len); // asserts if len == 0
	92	buf.SetLength(WideCharToMultiByte(CP_ACP, 0 /* no flags */,
	93	bStr, len /* not necessarily NUL-terminated */,
	94	buf, len,
	95	NULL, NULL /* no default char */));
	96	}
	97	#endif
	98
	99	return str;
	100	}
	101
	102	// ----------------------------------------------------------------------------
	103	// wxBasicString
	104	// ----------------------------------------------------------------------------
	105
	106	wxBasicString::wxBasicString(const wxString& str)
	107	{
	108	m_bstrBuf = SysAllocString(str.wc_str(*wxConvCurrent));
	109	}
	110
	111	wxBasicString::wxBasicString(const wxBasicString& src)
	112	{
	113	m_bstrBuf = src.Get();
	114	}
	115
	116	wxBasicString& wxBasicString::operator=(const wxBasicString& src)
	117	{
	118	SysReAllocString(&m_bstrBuf, src);
	119	return *this;
	120	}
	121
	122	wxBasicString::~wxBasicString()
	123	{
	124	SysFreeString(m_bstrBuf);
	125	}
	126
	127
	128	// ----------------------------------------------------------------------------
	129	// Convert variants
	130	// ----------------------------------------------------------------------------
	131
	132	#if wxUSE_VARIANT
	133
	134	WXDLLEXPORT bool wxConvertVariantToOle(const wxVariant& variant, VARIANTARG& oleVariant)
	135	{
	136	VariantInit(&oleVariant);
	137	if (variant.IsNull())
	138	{
	139	oleVariant.vt = VT_NULL;
	140	return true;
	141	}
	142
	143	wxString type(variant.GetType());
	144
	145
	146	if (type == wxT("long"))
	147	{
	148	oleVariant.vt = VT_I4;
	149	oleVariant.lVal = variant.GetLong() ;
	150	}
	151	// Original VC6 came with SDK too old to contain VARIANT::llVal declaration
	152	// and there doesn't seem to be any way to test for it as Microsoft simply
	153	// added it to the later version of oaidl.h without changing anything else.
	154	// So assume it's not present for VC6, even though it might be if an
	155	// updated SDK is used. In this case the user would need to disable this
	156	// check himself.
	157	#if wxUSE_LONGLONG && !defined(__VISUALC6__)
	158	else if (type == wxT("longlong"))
	159	{
	160	oleVariant.vt = VT_I8;
	161	oleVariant.llVal = variant.GetLongLong().GetValue();
	162	}
	163	#endif
	164	else if (type == wxT("char"))
	165	{
	166	oleVariant.vt=VT_I1; // Signed Char
	167	oleVariant.cVal=variant.GetChar();
	168	}
	169	else if (type == wxT("double"))
	170	{
	171	oleVariant.vt = VT_R8;
	172	oleVariant.dblVal = variant.GetDouble();
	173	}
	174	else if (type == wxT("bool"))
	175	{
	176	oleVariant.vt = VT_BOOL;
	177	oleVariant.boolVal = variant.GetBool() ? VARIANT_TRUE : VARIANT_FALSE;
	178	}
	179	else if (type == wxT("string"))
	180	{
	181	wxString str( variant.GetString() );
	182	oleVariant.vt = VT_BSTR;
	183	oleVariant.bstrVal = wxConvertStringToOle(str);
	184	}
	185	#if wxUSE_DATETIME
	186	else if (type == wxT("datetime"))
	187	{
	188	wxDateTime date( variant.GetDateTime() );
	189	oleVariant.vt = VT_DATE;
	190
	191	SYSTEMTIME st;
	192	date.GetAsMSWSysTime(&st);
	193
	194	SystemTimeToVariantTime(&st, &oleVariant.date);
	195	}
	196	#endif
	197	else if (type == wxT("void*"))
	198	{
	199	oleVariant.vt = VT_DISPATCH;
	200	oleVariant.pdispVal = (IDispatch*) variant.GetVoidPtr();
	201	}
	202	else if (type == wxT("list") \|\| type == wxT("stringlist"))
	203	{
	204	oleVariant.vt = VT_VARIANT \| VT_ARRAY;
	205
	206	SAFEARRAY *psa;
	207	SAFEARRAYBOUND saBound;
	208	VARIANTARG *pvargBase;
	209	VARIANTARG *pvarg;
	210	int i, j;
	211
	212	int iCount = variant.GetCount();
	213
	214	saBound.lLbound = 0;
	215	saBound.cElements = iCount;
	216
	217	psa = SafeArrayCreate(VT_VARIANT, 1, &saBound);
	218	if (psa == NULL)
	219	return false;
	220
	221	SafeArrayAccessData(psa, (void**)&pvargBase);
	222
	223	pvarg = pvargBase;
	224	for (i = 0; i < iCount; i++)
	225	{
	226	// copy each string in the list of strings
	227	wxVariant eachVariant(variant[i]);
	228	if (!wxConvertVariantToOle(eachVariant, * pvarg))
	229	{
	230	// memory failure: back out and free strings alloc'ed up to
	231	// now, and then the array itself.
	232	pvarg = pvargBase;
	233	for (j = 0; j < i; j++)
	234	{
	235	SysFreeString(pvarg->bstrVal);
	236	pvarg++;
	237	}
	238	SafeArrayDestroy(psa);
	239	return false;
	240	}
	241	pvarg++;
	242	}
	243
	244	SafeArrayUnaccessData(psa);
	245
	246	oleVariant.parray = psa;
	247	}
	248	else
	249	{
	250	oleVariant.vt = VT_NULL;
	251	return false;
	252	}
	253	return true;
	254	}
	255
	256	#ifndef VT_TYPEMASK
	257	#define VT_TYPEMASK 0xfff
	258	#endif
	259
	260	WXDLLEXPORT bool
	261	wxConvertOleToVariant(const VARIANTARG& oleVariant, wxVariant& variant)
	262	{
	263	bool ok = true;
	264	if ( oleVariant.vt & VT_ARRAY )
	265	{
	266
	267	// Compute the total number of elements in all array dimensions
	268	int cElements = 1;
	269	for ( int cDims = 0; cDims < oleVariant.parray->cDims; cDims++ )
	270	cElements *= oleVariant.parray->rgsabound[cDims].cElements;
	271
	272	// Get a pointer to the data
	273	void* pvdata;
	274	HRESULT hr = SafeArrayAccessData(oleVariant.parray, &pvdata);
	275	if ( FAILED(hr) )
	276	return false;
	277
	278	switch (oleVariant.vt & VT_TYPEMASK)
	279	{
	280	case VT_VARIANT:
	281	{
	282	variant.ClearList();
	283	VARIANTARG variant_data=(VARIANTARG)pvdata;
	284	for ( int i = 0; i < cElements; i++ )
	285	{
	286	VARIANTARG& oleElement = variant_data[i];
	287	wxVariant vElement;
	288	if ( !wxConvertOleToVariant(oleElement, vElement) )
	289	{
	290	ok = false;
	291	variant.ClearList();
	292	break;
	293	}
	294
	295	variant.Append(vElement);
	296	}
	297	}
	298	break;
	299
	300	case VT_BSTR:
	301	{
	302	wxArrayString strings;
	303	BSTR string_val=(BSTR)pvdata;
	304	for ( int i = 0; i < cElements; ++i )
	305	{
	306	wxString str=wxConvertStringFromOle(*string_val);
	307	strings.Add(str);
	308	++string_val;
	309	}
	310	variant=strings;
	311	}
	312	break;
	313
	314	default:
	315	wxLogDebug(wxT("unhandled VT_ARRAY type %x in wxConvertOleToVariant"),
	316	oleVariant.vt & VT_TYPEMASK);
	317	variant = wxVariant();
	318	ok = false;
	319	break;
	320	}
	321
	322	SafeArrayUnaccessData(oleVariant.parray);
	323	}
	324	else if ( oleVariant.vt & VT_BYREF )
	325	{
	326	switch ( oleVariant.vt & VT_TYPEMASK )
	327	{
	328	case VT_VARIANT:
	329	{
	330	VARIANTARG& oleReference = *((LPVARIANT)oleVariant.byref);
	331	if (!wxConvertOleToVariant(oleReference,variant))
	332	return false;
	333	break;
	334	}
	335
	336	default:
	337	wxLogError(wxT("wxAutomationObject::ConvertOleToVariant: [as yet] unhandled reference %X"),
	338	oleVariant.vt);
	339	return false;
	340	}
	341	}
	342	else // simply type (not array or reference)
	343	{
	344	switch ( oleVariant.vt & VT_TYPEMASK )
	345	{
	346	case VT_BSTR:
	347	{
	348	wxString str(wxConvertStringFromOle(oleVariant.bstrVal));
	349	variant = str;
	350	}
	351	break;
	352
	353	case VT_DATE:
	354	#if wxUSE_DATETIME
	355	{
	356	SYSTEMTIME st;
	357	VariantTimeToSystemTime(oleVariant.date, &st);
	358
	359	wxDateTime date;
	360	date.SetFromMSWSysTime(st);
	361	variant = date;
	362	}
	363	#endif // wxUSE_DATETIME
	364	break;
	365
	366	// See the comment before the __VISUALC6__ test above.
	367	#if wxUSE_LONGLONG && !defined(__VISUALC6__)
	368	case VT_I8:
	369	variant = wxLongLong(oleVariant.llVal);
	370	break;
	371	#endif // wxUSE_LONGLONG
	372
	373	case VT_I4:
	374	variant = (long) oleVariant.lVal;
	375	break;
	376
	377	case VT_I2:
	378	variant = (long) oleVariant.iVal;
	379	break;
	380
	381	case VT_BOOL:
	382	variant = oleVariant.boolVal != 0;
	383	break;
	384
	385	case VT_R4:
	386	variant = oleVariant.fltVal;
	387	break;
	388
	389	case VT_R8:
	390	variant = oleVariant.dblVal;
	391	break;
	392
	393	case VT_DISPATCH:
	394	variant = (void*) oleVariant.pdispVal;
	395	break;
	396
	397	case VT_NULL:
	398	variant.MakeNull();
	399	break;
	400
	401	case VT_EMPTY:
	402	break; // Ignore Empty Variant, used only during destruction of objects
	403
	404	default:
	405	wxLogError(wxT("wxAutomationObject::ConvertOleToVariant: Unknown variant value type %X -> %X"),
	406	oleVariant.vt,oleVariant.vt&VT_TYPEMASK);
	407	return false;
	408	}
	409	}
	410
	411	return ok;
	412	}
	413
	414	#endif // wxUSE_VARIANT
	415
	416
	417	// ----------------------------------------------------------------------------
	418	// Debug support
	419	// ----------------------------------------------------------------------------
	420
	421	#if wxUSE_DATAOBJ
	422
	423	#if wxDEBUG_LEVEL && (( defined(__VISUALC__) && (__VISUALC__ > 1000) ))
	424	static wxString GetIidName(REFIID riid)
	425	{
	426	// an association between symbolic name and numeric value of an IID
	427	struct KNOWN_IID {
	428	const IID *pIid;
	429	const wxChar *szName;
	430	};
	431
	432	// construct the table containing all known interfaces
	433	#define ADD_KNOWN_IID(name) { &IID_I##name, wxT(#name) }
	434
	435	static const KNOWN_IID aKnownIids[] = {
	436	ADD_KNOWN_IID(AdviseSink),
	437	ADD_KNOWN_IID(AdviseSink2),
	438	ADD_KNOWN_IID(BindCtx),
	439	ADD_KNOWN_IID(ClassFactory),
	440	#if ( !defined( __VISUALC__) \|\| (__VISUALC__!=1010) )
	441	ADD_KNOWN_IID(ContinueCallback),
	442	ADD_KNOWN_IID(EnumOleDocumentViews),
	443	ADD_KNOWN_IID(OleCommandTarget),
	444	ADD_KNOWN_IID(OleDocument),
	445	ADD_KNOWN_IID(OleDocumentSite),
	446	ADD_KNOWN_IID(OleDocumentView),
	447	ADD_KNOWN_IID(Print),
	448	#endif
	449	ADD_KNOWN_IID(DataAdviseHolder),
	450	ADD_KNOWN_IID(DataObject),
	451	ADD_KNOWN_IID(Debug),
	452	ADD_KNOWN_IID(DebugStream),
	453	ADD_KNOWN_IID(DfReserved1),
	454	ADD_KNOWN_IID(DfReserved2),
	455	ADD_KNOWN_IID(DfReserved3),
	456	ADD_KNOWN_IID(Dispatch),
	457	ADD_KNOWN_IID(DropSource),
	458	ADD_KNOWN_IID(DropTarget),
	459	ADD_KNOWN_IID(EnumCallback),
	460	ADD_KNOWN_IID(EnumFORMATETC),
	461	ADD_KNOWN_IID(EnumGeneric),
	462	ADD_KNOWN_IID(EnumHolder),
	463	ADD_KNOWN_IID(EnumMoniker),
	464	ADD_KNOWN_IID(EnumOLEVERB),
	465	ADD_KNOWN_IID(EnumSTATDATA),
	466	ADD_KNOWN_IID(EnumSTATSTG),
	467	ADD_KNOWN_IID(EnumString),
	468	ADD_KNOWN_IID(EnumUnknown),
	469	ADD_KNOWN_IID(EnumVARIANT),
	470	ADD_KNOWN_IID(ExternalConnection),
	471	ADD_KNOWN_IID(InternalMoniker),
	472	ADD_KNOWN_IID(LockBytes),
	473	ADD_KNOWN_IID(Malloc),
	474	ADD_KNOWN_IID(Marshal),
	475	ADD_KNOWN_IID(MessageFilter),
	476	ADD_KNOWN_IID(Moniker),
	477	ADD_KNOWN_IID(OleAdviseHolder),
	478	ADD_KNOWN_IID(OleCache),
	479	ADD_KNOWN_IID(OleCache2),
	480	ADD_KNOWN_IID(OleCacheControl),
	481	ADD_KNOWN_IID(OleClientSite),
	482	ADD_KNOWN_IID(OleContainer),
	483	ADD_KNOWN_IID(OleInPlaceActiveObject),
	484	ADD_KNOWN_IID(OleInPlaceFrame),
	485	ADD_KNOWN_IID(OleInPlaceObject),
	486	ADD_KNOWN_IID(OleInPlaceSite),
	487	ADD_KNOWN_IID(OleInPlaceUIWindow),
	488	ADD_KNOWN_IID(OleItemContainer),
	489	ADD_KNOWN_IID(OleLink),
	490	ADD_KNOWN_IID(OleManager),
	491	ADD_KNOWN_IID(OleObject),
	492	ADD_KNOWN_IID(OlePresObj),
	493	ADD_KNOWN_IID(OleWindow),
	494	ADD_KNOWN_IID(PSFactory),
	495	ADD_KNOWN_IID(ParseDisplayName),
	496	ADD_KNOWN_IID(Persist),
	497	ADD_KNOWN_IID(PersistFile),
	498	ADD_KNOWN_IID(PersistStorage),
	499	ADD_KNOWN_IID(PersistStream),
	500	ADD_KNOWN_IID(ProxyManager),
	501	ADD_KNOWN_IID(RootStorage),
	502	ADD_KNOWN_IID(RpcChannel),
	503	ADD_KNOWN_IID(RpcProxy),
	504	ADD_KNOWN_IID(RpcStub),
	505	ADD_KNOWN_IID(RunnableObject),
	506	ADD_KNOWN_IID(RunningObjectTable),
	507	ADD_KNOWN_IID(StdMarshalInfo),
	508	ADD_KNOWN_IID(Storage),
	509	ADD_KNOWN_IID(Stream),
	510	ADD_KNOWN_IID(StubManager),
	511	ADD_KNOWN_IID(Unknown),
	512	ADD_KNOWN_IID(ViewObject),
	513	ADD_KNOWN_IID(ViewObject2),
	514	};
	515
	516	// don't clobber preprocessor name space
	517	#undef ADD_KNOWN_IID
	518
	519	// try to find the interface in the table
	520	for ( size_t ui = 0; ui < WXSIZEOF(aKnownIids); ui++ ) {
	521	if ( riid == *aKnownIids[ui].pIid ) {
	522	return aKnownIids[ui].szName;
	523	}
	524	}
	525
	526	#ifndef __WXWINCE__
	527	// unknown IID, just transform to string
	528	Uuid uuid(riid);
	529	return wxString((const wxChar *)uuid);
	530	#else
	531	return wxEmptyString;
	532	#endif
	533	}
	534
	535	WXDLLEXPORT void wxLogQueryInterface(const wxChar *szInterface, REFIID riid)
	536	{
	537	wxLogTrace(wxTRACE_OleCalls, wxT("%s::QueryInterface (iid = %s)"),
	538	szInterface, GetIidName(riid).c_str());
	539	}
	540
	541	WXDLLEXPORT void wxLogAddRef(const wxChar *szInterface, ULONG cRef)
	542	{
	543	wxLogTrace(wxTRACE_OleCalls, wxT("After %s::AddRef: m_cRef = %d"), szInterface, cRef + 1);
	544	}
	545
	546	WXDLLEXPORT void wxLogRelease(const wxChar *szInterface, ULONG cRef)
	547	{
	548	wxLogTrace(wxTRACE_OleCalls, wxT("After %s::Release: m_cRef = %d"), szInterface, cRef - 1);
	549	}
	550
	551	#endif // wxDEBUG_LEVEL
	552
	553	#endif // wxUSE_DATAOBJ
	554
	555	#endif // __CYGWIN10__
	556
	557	#endif // wxUSE_OLE